1. Can calculators and spreadsheets work out the median of a set of values?
Yes, the latest calculators and spreadsheets can find out just about anything, including the median.
2. What is the disadvantage of using the mean as an average for a set of scores?
It can be significantly effected by extreme small or large values.
3. If a value in a set of data is 0, is it counted when working out the mean?
Yes, when working out how many values there are the 0 must be counted.